Bidirectional control of 4 DC motors using ATtiny Microcontroller and L293D

This is an Instructable on controlling DC motors using ATMEL ATtiny2313 micro controller and L293D motor controller chip. In this Instructable we will learn to control the rotational direction of up to 4 DC motors using ATtiny2313 chip. ATtiny2313 is a cheap ATMEL AVR micro controller with 2KB ISP flash memory, 128 Bytes ISP EEPROM, 128 Bytes internal SRAM. The chip is available in an easy to use 20 pin DIP package making it ideal for hobbyists.”